Nostalgia Muscle
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NOSTALGIA MUSCLE Class Description Nostalgia Muscle is an index-style foot brake only class for 1955 through 1985 year models Classification will be based on a visual inspection and an E.T. range. CLASS DESIGNATIONS & INDEX AAA/NMC 9.50 AA/NMC 9.75 A/NMC 10.00 B/NMC 10.25 C/NMC 10.50 D/NMC 10.75 E/NMC 11.00 F/NMC 11.25 G/NMC 11.50 H/NMC 11.75 I/NMC 12.00 J/NMC 12.25 K/NMC 12.50 L/NMC 12.75 M/NMC 13.00 N/NMC 13.25 O/NMC 13.50 P/NMC 13.75 Q/NMC 14.00 R/NMC 14.25 S/NMC 14.50 T/NMC 14.75 U/NMC 15.00 V/NMC 15.25 W/NMC 15.50 X/NMC 15.75 Y/NMC 16.00 Qualifying Information, Ladder Type, & Tree All Run, NHRA Sportsman Ladder, .500 Full Tree, Handicap Start. Auto Start. Courtesy Stage. Laddered first round, paired according to qualifying positions, and then advance to eliminations. Class will qualify, be awarded qualifying points and laddered based on elapsed time closest to index recorded in the qualifying sessions. All class participants must declare & have posted the class of choice prior to the 1st scheduled qualifying run in their respective eliminator or at the time of technical inspection. Competitors may change classes up to 30 minutes following the first Qualifying Attemptsession. If a competitor changes classes, any previous qualifying runs will be void and not count towards qualifying. Failure to declare an index will result in placement in the “U” Index Class. All qualifiers must have a valid elapsed time recorded to be placed into eliminator competition. ELIGIBLE YEAR MODELS AND BODY STYLES The following is a list of Manufactures and Engines allowed to compete in Nostalgia Muscle. Engine must be of the same manufacture as vehicle. • 64 – 85 AMC Corporation All Body Styles & Models • 60 – 85 Buick Corporation All Body Styles & Models • 55 – 85 Chevrolet Corporation All Body Styles & Models • 55 – 85 Chrysler Corporation All Body Styles & Models • 55 – 85 Pontiac Corporation All Body Styles & Models • 55 – 85 Ford Corporation All Body Styles & Models • 60 – 85 Mercury Corporation All Body Styles & Models • 60 – 85 Olds Corporation All Body Styles & Models RADIATOR: OEM production-style or aftermarket radiator is required and must be mounted in stock location. Stock core support is required. Water pump: Any aftermarket (belt drive or electric drive) pump permitted. Cooling Fans: Any permitted. ENGINE Manufacture of engine must be the same as vehicle. Year of engine cannot exceed 1985 or later. EXHAUST All entries allowed to use tubular headers. Adapter plates permitted to bolt headers to cylinder head. Exhaust must be directed out of car body, away from driver and fuel tank. HEADERS & COLLECTORS: Any headers and/or collectors permitted. EXHAUST TUBING/SIZE: Any tubing size permitted. TAILPIPE & EXHAUST RULES: Not required. MUFFLER REQUIREMENTS: Not required. FUEL DELIVERY SYSTEM Fuel cells, electric or mechanical fuel pumps, pressure regulators, and any line size permitted. Fuel pump must shut off with a master electrical switch. Stock gas tank (if used) must be retained in factory location. Modified fuel pickups & outlet permitted. Aftermarket/fabricated fuel tank or cell permitted. Must be located in trunk area. If tank or fuel filler is inside trunk, a bulkhead of minimum .032” aluminum or .024” steel must be used between trunk and driver compartment, and tank must be vented to outside of car. When used, fuel cells must have a metal box protecting the part of the fuel cell that is outside the trunk floor. Non-metallic fuel cells or tanks must be grounded to frame. See NHRA General Regulations Section 1.5. GASOLINE: Gasoline and commercially available E-85 are the only permitted fuels. NITROUS OXIDE: Prohibited. OIL SYSTEM Dry-sumps prohibited. Oil pump must remain in stock location. Oil pan capacity may be increased. SUPERCHARGER: Prohibited unless Factory Installed. BLOCK Cast iron or aluminum aftermarket blocks permitted, but must retain original external appearance. ENGINE LOCATION\ MOUNTS Engine must be in stock location. Block and/or heads must not touch stock firewall. Firewall must be in stock location. Solid engine mounts permitted. The use of motor plates Allowed. HEADS Aftermarket cylinder heads permitted, but must retain original overall appearance for engine declared. Any internal cylinder-head modifications permitted. VALVETRAIN Any valve train permitted with the following restrictions: exposed aftermarket gear or belt drives prohibited. Any timing device must fit beneath the stock type front timing cover. CARBURETOR OEM style two 4 barrel or three 2 barrel carburetors permitted if offered as factory or dealer option in addition to those options listed in “Eligible Year Models and Body Styles”. Carburetors are restricted to the following manufactures: Holley, Edelbrock, Carter, Rochester, Demon, Quick Fuel Technologies, and Ford-Autolite-Motorcraft. Choke horn, choke plate, choke shaft, choke linkage, and choke mechanism may be removed. FUEL INJECTION Vehicle originally equipped with fuel injectors may replace original OEM units with unit of the same manufacture or basic design, performance and appearances the original unit or factory super ceded unit. INTAKE MANIFOLD Manifold restricted to factory cast iron, OEM cast aluminum, or aftermarket cast aluminum units. Any single plane (360 degree) or dual plane (180 degree) unit permitted which does not extend carburetor(s) above plane of hood. OEM style two 4 barrel or three 2 barrel intake manifolds permitted if offered as factory or dealer installed option. SOLENOIDS: Prohibited. TURBOCHARGER: Prohibited. AFTERCOOLER/INTERCOOLER: Prohibited. DRIVETRAIN CLUTCH Flywheel and Clutch meeting SFI Spec 1.1 or 1.2 (two- disc maximum) mandatory on any car running 11.49(7.35) or quicker. Flywheel shield meeting SFI spec 6.1, 6.2 or 6.3 mandatory on all cars running 11.49(7.35) or quicker. Clutch operation must be manually applied and disengaged with foot during run, without the assist of electric, hydraulic or pneumatic devices. Multi stage, variable release, or lock up type of any description is prohibited. Throwout bearing must release all fingers or levers simultaneously. DRIVESHAFT: Any permitted. REAREND: Any automotive type rearend permitted. MANUAL TRANSMISSIONS OEM or aftermarket transmissions with a maximum of 5 forward speeds permitted. Clutchless transmissions prohibited. All shifts must be made manually without the aid of electric, hydraulic or pneumatic devices. Starting line rev limiters prohibited. Torque converters not permitted with this type transmission. PURPOSE BUILT TRANSMISSIONS: Prohibited. AUTOMATIC TRANSMISSIONS (OEM American transmissions or replicas of OEM American transmissions that use planetary gears) Automatic transmissions originally produced by any American automobile manufacturer or replicas of an automatic transmission produced by any American automobile manufacture mandatory. Lock-up transmissions/torque converters prohibited. Transmission-to-engine adapters permitted. All vehicles running quicker than 9.99 or faster than 135 mph using an automatic transmission must be equipped with a transmission shield meeting SFI Sec 4.1, a flexplate meeting SFI Spec 29.1, and covered by a flexplate shield meeting SFI Spec 30.1. All shifts must be made manually without the aid of electric or pneumatic devices. Transbrake prohibited. In those classes that prohibit trans-brakes the following will be used to enforce the rule. A competitor may elect to leave the trans-brake solenoid installed in the transmission, however any/all physical wiring must be removed to the solenoid while the vehicle is in competition. Starting line rev limiters prohibited. Clutch not permitted with this type transmission. BRAKES & SUSPENSION BRAKES The braking system may be upgraded. All cars must have front and rear hydraulic brakes. Automated brakes or any type of traction control is prohibited. Application and release of brakes must be a function of the driver’s foot. Line loc permitted on front wheels only. Any other electric, pneumatic, or hydraulic device in the system is prohibited. SHOCK ABSORBERS Each vehicle in competition must be equipped with one operative shock absorber for each sprung wheel. Shock absorbers may be either hydraulic or friction type, securely mounted and in good working order. STEERING Manual or power assisted aftermarket steering system in stock location mandatory. Rack and Pinion steering prohibited unless OEM equipped. CHASSIS All vehicles must have a chassis that meets the guidelines set by SFI for their respective speed and elapsed time. A valid NHRA serialized Chassis sticker is mandatory for any car running 9.99 (6.39 = 1/8 mile) or quicker, or 135mph or faster at a NHRA member track. SUSPENSION FRONT SUSPENSION: Stock type front suspension required for body used. Travel limiters permitted. Aftermarket springs permitted. Aftermarket, direct replacement bolt in, tubular A- arms permitted. REAR SUSPENSION: Factory spring arrangement must be retained for body used. Leaf springs may be moved inboard for tire clearance. Coil spring vehicles may beef stock control arms or use aftermarket heavy-duty adjustable replacement control arms. Aftermarket springs permitted. Only bolt-on traction devices permitted. Aftermarket weld-on ladder bars, 4-link systems, and coil-over suspensions prohibited. WHEELIE BARS Prohibited. FRAME Stock, unaltered frame rails required in front subframe. Tubular or rectangular crossmembers and/or “X” bracing permitted. Stock rear subframes required. If the stock rear frame is notched, a piece of the outer frame may be removed for tire clearance only. All notched area of frame rail must be re-covered in steel plate. The inner frame section must remain unaltered. Rear frame rail may not be sectioned. Subframes on unibodied cars may be joined under car. Maximum size material to be used; 2x3x1/8 inch rectangular tubing. If connector protrudes through floor, floor must be completely welded to connector. GROUND CLEARANCE Minimum 3 inches from front of vehicle to 12 inches behind centerline of front axle; 2 inches for remainder of vehicle, except oil pan and exhaust headers.